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Mobile Maia

Offline chess against Maia-3 with local Stockfish analysis
New in version 2.1.3
Mobile Maia 2.1.3 updates ONNX Runtime from 1.23.2 to 1.24.3, fixing a native
inference crash on affected Android 16 devices using Snapdragon SM8850-class
processors. The fix was confirmed on a Nubia Z80 Ultra through the Preview
build before promotion to Stable. Existing features, offline behavior, saved
games, settings, supported ABIs, and reproducible F-Droid release path remain
unchanged.
Mobile Maia is an offline-first chess app built around Maia-3, a human-like chess model developed by the University of Toronto Computational Social Science Lab.

Play against Maia at a selected rating without creating an account or connecting to a server. The Maia-3 model and Stockfish are bundled with the app, so games and analysis remain on your device.

Features include:


  • Play as White, Black, or a random side

  • Maia ratings from 800 to 2200, plus a custom rating

  • Unlimited play, clock presets, and custom time controls

  • Human-like move timing and adjustable Temperature and Top-P

  • Single or multiple premoves, with an optional 100 ms penalty

  • Takebacks, endgame draw offers, rematches, and automatic game restoration

  • Experimental Chessnut Go play with LEDs, sounds, battery status, reconnect recovery, and phone continuation

  • An analysis board with FEN and PGN import and export

  • A graphical position editor and persistent analysis variations

  • Offline Stockfish evaluation and Maia move comparison

  • Fast, Balanced, or Thorough full-game analysis

  • Full-game accuracy scores and a navigable evaluation graph

  • Brilliant, Good, Interesting, Dubious, Mistake, and Blunder move classifications

  • Two Stockfish suggestions and visible Maia/Stockfish agreement

  • Lichess-style material difference beside each player

  • Offline opening names and ECO codes from the Lichess opening database

  • Historical clocks and timed PGN export with standard clock annotations

  • PGN export with variations and game metadata



Mobile Maia is independently developed free software. Its source code is available under the GNU Affero General Public License v3.0 only.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 2.1.3 (76) suggested Added on Sep 23, 2026

    arm64-v8a armeabi-v7a x86_64

    This version requires Android 7.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
    • access Bluetooth settings
      Allows the app to configure the local Bluetooth phone, and to discover and pair with remote devices.
    • connect to paired Bluetooth devices
      Allows the app to connect to paired Bluetooth devices
    • discover and pair nearby Bluetooth devices
      Allows the app to discover and pair nearby Bluetooth devices
    • com.dash1971.maia_chess.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 0.5 GiB PGP Signature | Build Log

  • New in version 2.1.2
    Mobile Maia 2.1.2 is a distribution-compatibility and build-hardening update
    with the same app features and offline behavior as 2.1.1. Android release
    minification removes Flutter's unused Play Core references for F-Droid while
    explicitly preserving ONNX/JNI entry points. The locked Stockfish NNUE download
    is now verified by SHA-256. Rooted ARM64 and x86_64 integration, saved-game
    upgrade, scanner, packaging, and reproducibility checks protect existing app
    behavior.
  • Version 2.1.2 (75) - Added on Sep 20, 2026

    arm64-v8a armeabi-v7a x86_64

    This version requires Android 7.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
    • access Bluetooth settings
      Allows the app to configure the local Bluetooth phone, and to discover and pair with remote devices.
    • connect to paired Bluetooth devices
      Allows the app to connect to paired Bluetooth devices
    • discover and pair nearby Bluetooth devices
      Allows the app to discover and pair nearby Bluetooth devices
    • com.dash1971.maia_chess.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 0.5 GiB PGP Signature | Build Log